METER ATMOS 41 - 2.2 CONNECTING LOGGERS

3
ATMOS 41
Table 1 Installation (continued)
Mounting
(continued)
Level the System
Use the bubble level underneath the ATMOS41 or a PROCHECK display to level
the weather station. The angle of the mounting pole may need to be adjusted
or shims added to the ATMOS41–pole interface to achieve level. The ATMOS41
must be within approximately ±2° of dead level (0, 0) in both the X and Y
directions to accurately measure rainfall and solar radiation.
Secure the System
Tighten the V-bolt nuts by hand until hand-tight, and then gently tighten with a
wrench, securing the ATMOS 41 flat and tight against the top of the stand.
CAUTION: Do not overtighten V-bolt.
Secure and Protect Cables
NOTE: Improperly protected cables can lead to severed cables or disconnected sensors.
Cabling issues can be caused by many factors such as rodent damage, driving over sensor
cables, tripping over cables, not leaving enough cable slack during installation, or poor
sensor wiring connections.
Install cables in conduit or plastic cladding when near the ground to avoid
rodent damage.
Gather and secure cables between the ATMOS 41 and the data logger to the
mounting mast in one or more places.
Connect to Data Logger
Plug the sensor into a data logger.
Use the data logger to make sure the sensor is reading properly.
Verify these readings are within expected ranges.
For more instructions on connecting to data loggers, refer to Section 2.2.
NOTE: ATMOS41 will not work with legacy Decagon data loggers (Em50 Series and Em5B) because the ATMOS41
outputs contain too many parameters.
2.2 CONNECTING
The ATMOS41 works seamlessly with METER data loggers. This system will not work
with legacy data loggers (Decagon Em5, Em5B, Em50, Em50R, and Em50G) because the
ATMOS41 has too many output parameters (previously limited to three). The ATMOS 41 can
also be used with other data loggers, such as those from Campbell Scientific, Inc. For
extensive directions on how to integrate the sensor into third-party loggers, refer to the
ATMOS41 Integrator Guide (metergroup.com/atmos41-support).
ATMOS41 sensors require an excitation voltage in the range of 3.6 to 15.0 VDC and operates
at a 2.8- to 5.5-VDC level for data communication. The ATMOS41 can be integrated using
SDI-12 protocol. See the ATMOS41 Integrator Guide for details on interfacing with data
acquisition systems.